def readAllowedNames () :
    names = [ ]
    print("Please enter the allowed names. End with 'done'")
    while True :
        name = input("Name:")
        if name == "done" :
            break;
        names.append(name)
    return names


def main () :
    allowed = readAllowedNames()
    while True :
        name = input("Please enter name ") 
        if name in allowed :
            print("Yes, you may enter")
        else :
            print("Sorry, you are not allowed")

main()